The city is located between the mouths of the rivers Tamar and Plym in what is widely regarded as one of the world's most impressive natural harbours. Plymouth is a unitary authority responsible for its own decision-making within the historic county of Devon.
The area was first recorded in the Domesday book as "Sudtone" (1086; later Sutton) and together with the towns of Devonport and Stonehouse amalgamated in 1914 to form the modern Plymouth.
The Royal Dockyard was built in the area, on the banks of the River Tamar, in 1690. Plymouth has a long and historic seafaring tradition, not least the launch of the English fleet from the Hoe (Plymouth's waterfront) to fend off the Spanish Armada (1588).
It was in 1620 that the Pilgrim Fathers left Plymouth for the New World, eventually setting up Plymouth Colony, Massachusetts.
Tourism is an important aspect of Plymouth's economy. Nearly 12 million people visit Plymouth every year.
As well as all the attractions of a modern city, Plymouth is a popular launch pad to other notable areas including the beaches and footpaths of the Devon and Cornwall coastline and the brooding landscape of nearby Dartmoor.
Important locations in the city include The Royal Citadel, Devonport Dockyard and The Barbican from where the Pilgrims left for the New World in 1620.